Folding sofa-bed with improved head section control linkage

ABSTRACT

A FOLDING BED FRAME FOR SOFA-BEDS HAVING A PLURALITY OF FRAME SECTIONS, INCLUDING A FOOT SECTION KNEE SECTION, TRUNK SECTION AND HEAD SECTION PIVOTED IN END-TO-END RELATION AND BEING FOLDABLE BETWEEN AN EXTENDED BEDFORMING POSITION AND A RETRACTED SOFA SEAT-FORMING POSITION, INCLUDING SUPPORT AND GUIDING LINKAGE ASSEMBLIES FOR DETERMINING THE PATH OF MOVEMENT OF THE TRUNK SECTION, AND HEAD SECTION ACTUATING LINK MEANS CONNECTED BETWEEN ONE OF THE SUPPORT LINKAGE ASSEMBLIES AND THE HEAD SECTION OPERATIVE TO VARIABLY CONTROL THE SPEED AND AMPLITUDE OF SWINGING MOVEMENT OF THE HEAD SECTION WITHIN THE SPACE BEHIND THE SOFA BACK CENTER RAIL, IN A MANNER TO PERMIT UTILIZATION OF A HEAD SECTION HAVING GREATER LENGTH THAN IS POSSIBLE WITH CONVENTIONAL SOFA-BED STRUCTURES.

M. P. SPITZ June 22, 1971 4 Sheets-Sheet 1 Filed April 21, 1969 .w nHMM/f v u m Q \mm, .C .H *LJLTMMWWMHWINMMHIL 1. 4 /Q /wwv a M Ww m Nm. Em@ a n /w Mmmwm mm S 11% Q Q L mwllv EN. R Q Q Tri :JN k n mm @QR w Q su/fL June 22, 1.971 M, P, splTz l 3,585,658

FOLDING SOFA-BED WITH IMPROVED HEAD SECTION CONTROL LINKAG Filed April21, 1969 4 sheets-Sheet-rs June 22, 1971 M p SPH-Z v 3,585,658

FOLDING SOFA*BED WITH IMPROVILI) HHN) SECTION CONTROL LINKAGH FiledApril 21, 1969 4 Sheets-Sheet 5 June 22, 1971 1.55pm l 3,585,658

FOLDLNG SOFA-BED WITH IMPROVED HEAD SECTION CONTROL LINKAGII.

Filed April 21, 1969 4 sheets-sheet 4 United States Patent O 3,585,658FOLDING SOFA-BED WITH IMPROVED HEAD SECTION CONTROL LINKAGE Melvin P.Spitz, 619 N. Elm Drive, Beverly Hills, Calif. 90210 Filed Apr. 21,1969, Ser. No. 817,730 Int. Cl. A47c 17/14 U.S. Cl. -13 12 ClaimsABSTRACT OF THE DISCLOSURE A folding bed frame for sofa-beds having aplurality of frame sections, including a foot section, knee section,trunk section and head section pivoted in end-to-end relation `and beingfoldable between an extended bedforming position and a retracted sofaseat-forming position; including support and guiding linkage assembliesfor determining the path of movement of the trunk section; and headsection actuating link means connected between one of the supportlinkage assemblies and the head section operative to variably controlthe speed and amplitude of swinging movement of the head section withinthe space behind the sofa back center rail, in a manner to permitutilization of a head section having greater length than is possiblewith conventional sofa-bed structures.

BACKGROUND OF THE INVENTION The present invention relates generally tofolding bed frame structures.

The type of sofa-bed construction with which the present invention isconcerned comprises generally a plurality of bed frame sections whichare pivotally connected in end-to-end relation and are supported andguided so as to permit the frame to be foldable between an extendedbed-forming position and a retracted sofa seat-forming position. The bedframe structure is -accommodated in a sofa frame which essentiallycomprises a seat-forming area having a transversely extending frontrail, and a back center rail behind which there is space to accommodatethe head section, when the bed frame structure is in folded retractedposition. More specifically, when the bed frame structure is folded, theframe sections enclose the mattress under a degree of compression andare generally disposed with a foot section ina plane slightly oihorizontal so as to provide the base for seat cushions thereon; a kneesection disposed in a generally vertical position behind the upholsteredfront rail of the sofa frame; `a trunk section disposed generallyhorizontally along the base of the sofa frame; and a head sectiondisposed generally vertically behind the back center rail near the backof the sofa frame.

The recent trend in bedding dimensions is towards increased overall bedlength to provide a more comfortable sleeping surface, commensurate withthe increased average height of adults. The conventional type of bedframe structure for sofa-beds is severely limited with respect to bedlength for the reason that the bed frame sections must of necessity befolded within a sofa frame of relatively shallow depth. Prior efforts toincrease the bed length have therefore required that the sofa frame beof greater depth in order to accommodate the lengthened bed sectionsduring the articulation process and when in retracted folded position.

In the present invention, it is proposed to provide a sofa-bedconstruction which can be opened into a relatively longer bed, and yetclose within the normal relatively shallow sofa frame dimensions. Theextra bed length is obtained by making the head section longer than inpresent conventional structures, and by providing a con- ACC trollinkage to actuate the head section in a unique manner, the motive forcefor moving the head section being obtained from and in response to themovement of certain of the members constituting the supporting linkageassemblies for the trunk section of the bed frame structure.

While it has been generally known heretofore to provide operating linkstructures for the head section, 'which are connected between the headsection and support linkage assemblies for the trunk section, forexample as disclosed in U.S. Pat. No. 3,284,811, the objective and mainpurpose in such designs was to provide an operating structure to swingthe bed frame over a xed front rail of the sofa frame. The patentdiscloses a linkage between front link means and the head section, whichembodies a lost motion connection and does not operate to obtain theinherent advantageous results as embodied in applicants mechanism.

Applicant overcomes the inherently limited bed length of the prior artstructures by the provision of head section actuating link means whichare pivotally connected between the head section and a link member ofthe supporting link assemblage for the trunk section, the actuating linkmeans being connected at a point having movement in a path and in adirection relative to the pivotal connection of the head section withthe trunk section such that the speed of the swinging movement of thehead section will be variably controlled at different portions of itsmovement. Thus, a lengthened head section m-ay be articulated within arelatively shallow sofa frame by providing the structure of the hereindescribed invention, wherein the swinging process at the pivotalconnection of the head section and the trunk section will be speeded upduring the initial stages of movement of the head section underneath andbehind the back center rail during the closing of the bed structure.This speeding up of the swinging process prevents the head section fromprotruding beyond the rear of the sofa frame. Subsequently as the headsection is moved towards its final position behind the back center rail,the swinging movement of the head section is slowed down and diminishedin such a manner that the head section will be finally disposed in aplane sloping rearward of Vertical, lying relatively close to the backof the so-fa frame. The space required behind the back center rail isthus minimized, so that the back center rail may be located relativelydeeply within the sofa frame toward the rear of the frame, which permitsadvantageous loosepillow back furniture styling. The lengthened bedstructure is simultaneously achieved with the added length of the headsection, and additional lengthening of the foot section if desired,which is accommodated in the retracted position by virtue of the headsection being disposed relatively farther from the front of the sof-aframe.

SUMMARY OF THE INVENTION The present invention relates generally tosofa-beds of the type having an articulated sectional bed frame movableto extended and retracted folded positions, and more particularly to animproved linkage for actuating and controlling swinging movements of thebed frame head section.

Among the various objects of the herein described invention, it is ageneral object to provide a sofa-bed construction which will haveimproved operating characteristics over existing conventionalarrangements, and particularly which will permit the utilization of alonger head section than in conventional arrangements, and still permitarticulate movement of the head section Within the contines of normalsofa frame dimensions.

It is a further object to provide improved actuating and control meansfor the head section of the foldable bed frame, which will permit thehead section to be made longer than in conventional structures so as toclose the undesirable and unsightly gap which normally exists betweenthe end of the head section and the upholstered back of the sofa, whenthe bed frame is extended into open bed-position.

A further object is concerned with the provision of novel means foractuating and controlling the head section during its swinging movementsin the area behind the back center rail of the sofa frame so as topermit a more complete utilization of such area and permit deepening ofthe sofa seat for advantageous loose-pillowback furniture styling.

Another object of the invention is to provide improved linkage operatingmeans for controlling the swinging movements of the lengthened headsection during folding and unfolding of the bed frame so that theswinging movement will be speeded up during the initial stages offolding in which the lengthened head section is moved underneath andbehind the back center rail, and slowed down and diminished as thelengthened head section approaches its fully folded upright positionadjacent the rear of the sofa frame. A positive control is providedduring the folding and unfolding movements, and by coordinating thespeed of movement of the lengthened head section about its pivotal axis,the lengthened head section will be prevented from protruding beyond therear of the sofa frame during any portion of its travel.

Still another object is to provide in connection with the foregoingobject, a unique camming action exerted upon the lengthened head sectionby the actuating means, which permits that various speeds and amplitudeof movement of the swinging head section are accomplished at variousportions of the swing, as desired.

A still further object is to provide an actuating connection with thelengthened head section, which can be varied according to a desiredpattern, and wherein the connection to the lengthened head section willbe spaced at variable distances from the axis of swinging movement ofthe lengthened head section at different positions of its travel to meetvaried design objectives.

Further objects of the invention will be brought out in the followingpart of the specication, wherein detailed description is for the purposeof fully disclosing the invention without placing limitations thereon.

BRIEF DESCRIPTION OF THE DRAWINGS Referring to the accompanyingdrawings, which are for illustrative purposes only:

FIG. 1 is a side elevational view of a sofa-bed construction having abed frame operatively controlled in accordance with the features of thepresent invention;

FIG. 2 is a fragmentary top plan View of the linkage assemblies andassociated link means for controlling the trunk section and lengthenedhead section during articulated movements to a bed-forming position anda retracted seat-forming position;

FIG. 3 is an end view showing the frame in a partially folded position,with the lengthened head section substantially at an initial enteringposition into the space behind the back rail;

FIG. 4 --is a similar view with the bed frame moved to a furtherretracted position;

FIG. 5 is a similar view with the bed frame in fully retractedseat-forming position, and with the lengthened head section extendingupright in the space behind the sofa back center rail;

FIG. 6 is an enlarged fragmentary View of the actuating means of thehead section included in the structure of FIG. 1, with the head sectionbeing in a bed-forming extended position.

FIG. 7 is a similar view showing the head section in fully foldedposition.

FIG. 8 is an enlarged fragmentary View diagrammatically illustrating amodied construction of the head section actuating means, the headsection being in a bedforming extended position; and

FIG. 9 is a similar View showing the head section in fully foldedposition.

DESCRIPTION OF THE DISCLOSED EMBODIMENTS Referring more specifically tothe drawings, the sofabed structure embodying the features of thepresent invention is shown in FIG. 1 as being mounted in a conventionalupholstered sofa structure as generally ndicated in phantom lines at A.The sofa structure, which forms no part of the present invention,usually comprises opposite end portions that are associated with a fixedwooden frame structure which includes a front upstanding rail member 10and a rearwardly spaced back center rail member 11 below and back ofwhich certain parts of the articulated bed frame structure must bemoved, when the bed frame is folded to a seat-forming position. The backcenter rail member is forwardly spaced with respect to a back wall 12 ofthe sofa structure and cooperates therewith to form abehind-the-back-rail space as generally indicated at 13 and into whichcertain parts of the bed frame structure will be received, when in fullyfolded seat-forming position, as will hereinafter be further explained.

The folding sofa-bed tframe structure of the present invention includeson each side, a xed stationary frame structure in which a mainhorizontal frame member 14 is xedly secured in any desired manner to theadjacent frame structure of the sofa. The member 14 together with alixedly secured upstanding bracket 15 thereon constitute a supportingbase structure for linkage assemblies for interconnecting the bed framestructure with the sofa and guiding the movements of certain portionsthereof during folding and unfolding operations of the bed framestructure.

The :bed frame structure comprises a plurality of generally rectangularfolding sections identified by their side rails, namely, as a footsection 16, knee section 17, trunk section 18 and head section 19. Thesesections are connected in end-to-end articulated relation by jointpivots as indicated at 20, 21, and 22 respectively. The side rails ofthe sections and the operative linkage mechanisms are the same andduplicated on opposite sides of the bed frame structure. In thefollowing description, reference will be made to only one side.

The actuating mechanism for the foot and knee sections, as well as thesupporting legs is conventional and includes a bell crank 23 which isrotatably supported at its elbow on the trunk section 18 by a fulcrumpin 24. One end of an actuating link 25 is connected at 26 to arm 27 ofthe bell crank, the other end of the link 25 being pivoted at 28 to afolding leg 29 having its inner end hingedly supported on the trunksection 18.

A second bell crank 30 is fulcrumed on the joint pivot 21 at theconnected ends of the knee section and the trunk section. One end of ananchor link 31 is pivoted at 32 to the upper arm 33 of the bell crank30. The other end of link 31 is pivoted at 34 to the side rail of thefoot section 16 spaced from the joint pivot 20. The other arm 35 of bellcrank 30 is formed with an elongate slot 36 to slidably receive aconnection pin 37 at one end of a link 38, the other end of this linkbeing provided with a longitudinal slot 39 for slidably receivingconnection pin 40 carried :by the arm 27 of bell crank 23.

The ifoot section of the bed frame is supported in its extended positionupon an end leg 41 which is pivoted inwardly of its upper end at 42 tothe foot section, and an actuating link 43 has one end pivoted at 44 tothe upper end of leg 41, and its other end pivoted at 45 on the kneesection 17 spaced from the joint pivot connection 20.

The bell cranks 23 and 30 together with their associated connectinglinkages and other linkages as thus far described, are conventionallyknown arrangements for controlling the movements of the foot and kneesections, and to fold the legs 29 and 41 during folding and unfoldingmovements of these sections by an operator lirst grasping a cross bar 46at the outermost end of the foot section to [fold the foot and kneesections into their retracted positions, simultaneously folding the leg41; then grasping a cross bar (not shown) transversely connected to theknee section side rails at either side and lifting and closing the bedstructure into the sofa frame, simultaneously causing leg 29 to foldinto retracted position as the bell crank 23 rotates about fulcrum pin24.

As shown in FIG. 5, when the bed frame structure is completely foldedinto a seat-forming position, the foot section 16 becomes the seat baseupon which the seat cushions of the sofa are placed. The knee section 17is substantially vertically positioned closely behind the sofa frontrail 10, and the trunk section 18 is positioned generally horizontallyalong the bottom of the sofa below the foot section with which itcooperates to hold the folded mattress therebetween. The head section 19in the completely folded position of the bed frame extends substantiallyvertically adjacent the back wall 12 within the space 13 behind the backcenter rail member 11.

From a consideration of the relative positions of the bed sections, andin particular the position occupied by the head section it will becomeevident immediately that if an attempt is made to extend the length ofthe head section, in order to obtain a longer bed, and if standard sofadimensions are to be utilized, control means other than conventionallyavailable means must be provided in order to control the movements ofthe head section if it is to remain within the contines of the sofastructure while being moved between a seat-forming position and abed-forming position. The mechanism for positively guiding andcontrolling the swinging movements of a lengthened head sectioncomprises a main feature of the present invention, and will now be morefully explained in detail.

In the present invention, it is proposed to utilize two conventionalcooperatively associated linkage systems which are shown in FIG. 1 ascomprising rear support linkage means B and front support linkage meansC, these two systems being intercoupled and cooperatively connected withthe trunk section so as to direct and guide its movements during foldingand unfolding operations of the bed frame,

The rear support linkage means B is shown as comprising a rear hangerlink 47 which has one end connected at a fixed pivot point 48 at theupper end of the bracket 15. The other end of the hanger link is pivotedat 49 t0 one end of a rear support link 50, this link having its otherend pivotally connected with the joint pivot 22 connecting the trunksection and head section.

The front support linkage means is shown as comprising a main frontanchor link 51 which is connected at its lowermost end to a front fixedpivot point 52 toward the forward end of the horizontal frame member 14,the outer end of the anchor link being pivoted at 53 adjacent andinwardly positioned with respect to one end of a link 54 which ispivoted between its ends at a pivot point 55 to the rear support link 50for a relative swinging movement. The other end of the link 54 ispivotally connected with a second link 56 by a pivot connection 57. Atits other end, the link 56 is connected by a pivot 58 which is inwardlyspaced from the pivot 49 at the outermost end of the rear hanger link47. The end of link 54 which extends beyond the pivoted connection 53 isconnected by a pivot 59 with the outermost end of the other arm asindicated at 60 of the bell crank 23. The connected end portion of thelink 54 and the arm 60 of the bell crank 23 thus become operativeelements of the front support linkage means, and the interconnectedlinks 54 and 56 cooperate to form coordinating connecting means betweenthe rear support linkage means B and the front support linkage means C,and determine the path of movement of the trunk frame section duringfolding and unfolding operations thereof. It will be observed that vw'ththe described arrangement, the front support linkage means C isconnected at the fulcrum pin 24 with the trunk section at a pointforwardly positioned with respect to the pivotal joint 22 at which therear support linkage means B connects lwith the trunk section.

As further shown in FIG. l, the pivoted inner end of the front anchorlink 51 is provided with an angularly projecting arm 61 which isconnected to one end of a tension spring 62, the other end of thisspring being anchored to the horizontal frame member 14 at a point 63thereon by means of an appropriate attaching lug 64 as shown in FIG. 2.This spring operates in a manner well known in this type of bedconstruction and is provided to assist the operator in moving the bedframe from the folded seatforming position to the extended bed-formingposition.

As thus far described, it will be appreciated that the head section 19is free to move about its pivotal connection 22 with the trunk section18 and that it becomes necessary to create swinging movements of thehead section in coordination with the movements of the trunk section asdetermined by the front support linkage means and rear support linkagemeans systems. For such purpose, the present invention includes a uniquehead section actuating means as generally indicated at D in FIG, l, anddiagrammatically illustrated in FIGS. 6 and 7, which will now bedescribed in detail.

It will be appreciated that in order to permit a head section ofincreased length to articulate within the space 13 behind the backcenter rail 11 of a relatively shallow sofa frame structure, it will benecessary to swing the head section about its pivotal axis of connectionwith the trunk section at a varied speed of movement during changes ofits position at it enters and leaves the space 13, and as it reaches andleaves its final folded position. More specifically, it is an importantfeature of the present invention to provide head section actuating meanswhich will function to speed up the swinging movement of the headsection during the initial stages of its entering and linal stages ofits leaving the space 13 so as to prevent the head section fromprotruding beyond the rear or back wall 12 of the sofa frame during anyportion of travel through its arc of movement. Subsequently, during thefolding process for example, the swinging movement of the head sectionmust be slowed down and diminished as it approaches a vertical positionat the end of its movement in the space 13, in order that the headsection will lie relatively close to the back of the sofa frame, thusutilizing to the best advantage the available space above and behind theback center rail 11 to accommodate the added length of the head sectionand adjacent portion of the mattress.

In accomplishing this feature, the main front anchor link 51 is utilizedas a power source in a unique manner for motivating the head sectionactuating means D, which is connected between the head section and apoint on the anchor link 51 having movement in a path and in a directionrelative to the pivotal connection between the head section with thetrunk section such that the speed of the swinging movement of the headsection will be variably controlled at different portions thereof as thehead section is moved into and out of the space 13 behind the back railmember. As exemplary of head section actuating means for accomplishingthis purpose, there is shown in FIG. l a rocker arm 65 which is pivotedbetween its ends by a pivot 66 upon the link 54 between the pivots 53and 55. The lowermost end of this rocker arm, as viewed in FIG. l, isconnected by a pivot 67 to one end of a link 68, the other end of thislink being connected by a pivot 69 adjacent the outermost end of thefront anchor link 51. The uppermost end of the rocker arm 65 isconnected by a pivot 70 to one end of a connecting link 71 which has itsother end pivotally connected by a pivot 72 with the head section at apoint spaced from its joint connection with the trunk section. With thelinkage assembly just described for the actuating means of the headsection, it will be evident that movements of a point such as 69 on theanchor link 51 which are transmitted to the head section will be appliedin reversed direction to the required movement of the head section, andin proportionally decreased amplitude. It will `be appreciated, however,that a proper direction of movement might also be obtained by extendingthe outer end of the anchor link beyond the pivot 53, and connectingthis projecting end by a single link to the head section. The headsection actuating means D as thus described will also impart thenecessary variable swinging movement to control the lengthened headsection in the manner previously described for utilizing the space 13most efficiently.

Referring now to FIGS. 8 and 9, there is shown a modified embodiment ofthe head section actuating means, wherein the parts are illustrateddiagrammatically, and corresponding numerals have been applied to suchparts as are similar to those previously described. Briefly, themodified embodiment differs primarily in that the rocker arm 65 is nowmodified to provide an angle link 65a, and that the pivotal connectionwith the head section 19 provides a camming action. Such camming actionmay be accomplished in a variety of ways. In one such embodiment asdisclosed, the camming action is accomplished by providing a pin 73 atthe end of the roc-ker arm 65a which is connected to the head section,this pin being positioned moveably within a slot 74 in the side rail ofthe head section 19. By varying the configuration of the slot and itsangular disposition, the required camming action is provided whichvaries the speed and amplitude of the swinging movement of the headsection about the pivotal joint 22. It will be observed by comparing thepositions of the pin 73 in FIG. 8 lwith the position of this pin in FIG.9 that its distance with respect to the pivotal connection 22 is greaterwhen the head section and trunk section are substantially coplanar, thanwhen the head section is positioned at an angle to the trunk section asshown in FIG. 9. Although a cammi-ng action is obtained in this modifiedform of the invention, the modified form basically operates in the samemanner as the form described previously and provides a direct push andpull positive operating actuation of the head section without thedisadvantages of lost motion as envisioned by known prior art structuresas previously mentioned.

From the foregoing descriptions and dra-Wings, it will be clearlyevident that the delineated objects and features of the invention willbe accomplished.

Various modifications may suggest themselves to those skilled in the artwithout departing from the spirit of my invention, and, hence, I do notwish to be restricted to the specific forms shown and uses mentioned.

I claim:

1. In a folding sofa-bed construction including a bed frame having aplurality of frame sections, one of which is an inner head section, andanother an adjacent trunk section said sections being pivotallyinterconnected in endto-end relation for selective unfolding movement toan extended coplanar bed-forming position and folding movement to afolded retracted sofa seat-forming position in which the trunk sectionis disposed generally horizontally along the base of the sofa frame andthe head section extends generally upright in a space at the rear of thesofa seat behind the back center rail, mechanism for supporting andcontrolling the movements of said frame sections during movement of thebed frame to said extended and retracted positions, comprising:

(a) a stationary frame;

(b) rear support linkage means pivotally connected between a rear fixedpivot point on said sationary frame and a rear portion of said trunksection;

(c) front support linkage means pivotally connected between a frontfixed pivot point on said stationary frame and said trunk sectionforwardly of the connection to said rear support linkage means, said 8front linkage means including an anchor link having a pivotal connectionat its outer end and being pivoted at its inner end at said front fixedpivot point;

(d) connecting means between said front support linkage means and saidrear support linkage means for coordinating the movements of bothsupport linkage means in determining the path of movement of the trunksection; and

(e) head section actuating link means including a plurality of linkmembers pivotally connected in endto-end relation -between said anchorlink and a connection point on said head section spaced from the pivotconnection for pivotally swinging the head section relative to the trunksection, the connection with the anchor link being at a point on thelink adjacent its outer end pivotal connection, whereby said point kwillmove in a path and in a direction relative to the pivotal connection ofthe head section with the trunk section such that the speed andamplitude of the swinging movement of the head section will be variablycontrolled at different portions thereof.

2. A folding sofa-bed construction according to claim 1, wherein thespeed of swinging movement of the head section is increased as itinitially enters and finally leaves the space ibehind the back centerrail, and is decreased and diminished as it approaches and leaves thegenerally upright position therebehind.

3. A folding sofa-bed construction according to claim 1, kwherein saidcoordinating connecting means is pivotally connected with the anchorlink closely adjacent to said point of` pivotal connection of the headsection actuating link means.

4. A folding sofa-bed construction according to claim 3, wherein saidpoint is between the pivot connection of the coordinating connectingmeans and the inner end pivot of the anchor link.

5. A folding sofa-bed construction according to claim 1, wherein thehead section actuating link means has a camming con-nection with saidhead section.

6. In a folding sofa-bed construction including a bed frame having aplurality of frame sections, one of which is an inner head section, andanother an adjacent trunk section said sections being pivotallyinterconnected in endto-end relation for selective unfolding movement toan extended coplanar bed-forming position and folding movement to afolded retracted sofa seat-forming position in which the trunk sectionis disposed generally horizontally along the base of the sofa frame andthe head section exd tends generally upright in a space at the rear ofthe sofa seat behind the back center rail, mechanism for supporting andcontrolling the movements of said frame sections during movement of thehed frame to said extended and retracted positions, comprising:

(a) a stationary frame;

(b) rear support linkage means pivotally connected between a rear fixedpivot point on said stationary frame and a rear portion of said trunksection;

(c) front support linkage means pivotally connected between a front xedpivot point on said stationary frame and said trunk section forwardly ofthe connection to said rear support linkage means, said front linkagemeans including an anchor link pivoted at its inner end at said frontfixed pivot point;

(d) connecting means between said front support linkage means and saidrear support linkage means for coordinating the movements of bothsupport linkage means in determining the path of movement of the trunksection, including a link member having a pivotal connection with theanchor link; and

(e) head section actuating link means pivotally connected between saidanchor link and said head section for pivotally swinging the headsection relative to the trunk section, including a rocker link pivotedbetween its ends on said link member of the connecting means in spacedrelation to its pivot connection with said anchor link, the actuatinglink means connection with the anchor link being at a point havingmovement in a path and in a direction relative to the -pivotalconnection of the head section with the trunk section such that thespeed and amplitude of the swinging movement of the head section will bevariably controlled at different portions thereof.

7. A folding sofa-bed construction according to claim 6, wherein one endof the rocker link is coupled -with the anchor link and its other end iscoupled with the head section.

8. A folding sofa-bed construction according to claim 6, wherein therocker link is an angle link having one end thereof connected by aseparate link pivoted at said point on said anchor link, and the otherend of the rocker link having a camming connection with said headsection.

9. A folding sofa-bed construction according to claim 6, wherein therocker link has a cam actuating connection at one end with said headsection.

10. A folding sofa-bed construction according to claim 1l. A foldingsofa-bed construction according to claim 10 wherein the pin is carriedby said rocker link and the slot is on said head section.

12. A folding sofa-bed construction according to claim 2 wherein thehead section actuating link means has a connection with said headsection which varies in its spaced relation to the pivotal axis of saidhead section during movements of the bed frame between said extended andretracted positions.

References Cited UNITED STATES PATENTS 3,284,814 11/1966 Mikos 5-133,298,041 1/1967 Rogers, Jr. 5-13 3,300,792 l/1967 Spitz 5-13 3,416,16812/1968 Pokorny, lr. 5-13 3,503,081 3/1970 Mickos 5-13 20 CASMIR A.NUNBERG, Primary Examiner U.S. Cl. X.R. 5-29

